Question

6
Which of the following is a quadratic equation?
2
(A) x2 + 2x + 1 = (4 - 1)+ 3
(B) -2x2 = (5 –x) (2x-2/5)
(C) (k+ 1)x2 + 3/2x= 7, where k=-1
(D) x3-x2=(x-1)3​

Answer 1

Answer:

A is the quadratic equation